Monohybrid Genetic Cross:

(60 points)

1. Students will create their own genetic trait for a plant or animal.

2. Students will give a brief description of the trait explaining what organism, what the trait looks like and whether it is a dominant or recessive trait.(15 points)
3. Students will assign a letter of the alphabet to the trait and provide a legend. (5 points)
4. Students will demonstrate a cross between a heterozygous individual and a homozygous individual, giving the genotypes of each. (10 points)
5. Students will create a punnett square predicting the offspring of that cross. (20 points)
6. Students will give the expected genotypic and phenotypic chances for the offspring of this cross. (10 points)

Good Student Examples:

Aaron K. monohybrid geneitic cross

Eric P. monohybrid genetic cross

Montaye G. Monohybrid Crosses


Teacher Example:

White Stallion with Unicorn Horn
White Stallion with Unicorn Horn

The genetic trait I have chosen is the Unicorn Horn on the forehead of a white stallion horse. The Unicron Horn is a recessive trait in white stallion horses. In order for a white stallion to have a Unicorn Horn on the forehead, he must inherit two recessive traits for Unicron Horn (one from his mother and the other from his father).

H = no horn

h = unicorn horn


I will cross a heterozygous white stallion without a Unicorn Horn with a homozygous white stallion with a Unicorn Horn.

Hh X hh

Downey_Monohybrid.JPG
Downey_Monohybrid_geno_pheno.JPG